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Official Journal of the Japan Wood Research Society

Table 7 Standardized and non-standardized canonical coefficients of the included variables and intercepts of the discriminant functions for log-sector class 2

From: Classification of wood surfaces according to visual appearance by multivariate analysis of wood feature data

No.

Variable

Standardized coefficients

Coefficients

Function 1

Function 2

Function 1

Function 2

1

Number of knots

−6.276

0.519

−19.856

1.643

2

Number of black knots

5.388

0.817

15.134

2.295

3

Simpson index of knot type

3.944

−2.168

15.859

−8.716

4

Standard deviation of knot size

4.240

−2.305

2.652

−1.441

5

Standard deviation of sound knot size

4.064

−0.398

2.647

−0.260

6

Standard deviation of black knot size

−1.018

0.335

−0.883

0.291

7

Minimum sound knot size

2.871

0.264

2.382

0.219

8

Minimum black knot size

3.982

−1.337

2.647

−0.889

9

Maximum knot size

2.430

3.284

1.720

2.324

10

Maximum black knot size

−7.383

−1.159

−4.667

−0.733

11

Minimum knot elongation

−2.378

0.239

−7.336

0.738

12

Mean Euclidean distance to first nearest neighbour

−4.103

2.533

−2.921

1.804

Intercept

2.702

−7.390